?? chararrayreaderwriter.java
字號(hào):
package chararrayreaderwriterdemo;
import java.io.*;
import java.util.*;
public class CharArrayReaderWriter {
/**
* @param args
*/
public static void main(String[] args) {
// TODO Auto-generated method stub
try{
File file=new File(args[0]);
BufferedReader bufInputReader=new BufferedReader(new FileReader(file));
CharArrayWriter charArrayWriter=new CharArrayWriter();
char[] array=new char[1];
while(bufInputReader.read(array)!=-1){
charArrayWriter.write(array);
}
charArrayWriter.close();
bufInputReader.close();
array=charArrayWriter.toCharArray();
for(int i=0;i<array.length;i++)
System.out.print(array[i]+" ");
System.out.println();
Scanner scanner=new Scanner(System.in);
System.out.print("輸入修改位置:");
int pos=scanner.nextInt();
System.out.print("輸入修改字符");
char ch=scanner.next().charAt(0);
array[pos-1]=ch;
CharArrayReader charArrayReader=new CharArrayReader(array);
BufferedWriter bufWriter=new BufferedWriter(new FileWriter(file));
char[] temp=new char[1];
while(charArrayReader.read(temp)!=-1){
bufWriter.write(temp);
}
charArrayReader.close();
bufWriter.flush();
bufWriter.close();
}
catch(ArrayIndexOutOfBoundsException e){
System.out.println("沒有指定文件");
}
catch(IOException e){
e.printStackTrace();
}
}
}
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